These extensions are officially called the top-level domain (TLD) of a web address. They are added at the end of your domain name.
For example, the TLD of www.google.com is .com.
Or the TLD for nodowntime.domains is .domains.
Each TLD has its own benefits, so make sure to choose the one that best suits your idea and your website.
With NoDowntime Domains, you can choose the TLD you want. We have 250+ international domain name extensions available.
In addition, you get a FREE domain (.com, .net, .org, .eu, .uk and .us) if you select an annual web hosting plan at the checkout of NoDowntime Domains.